A voyage in space; a course of six lectures "adapted to a juvenile auditory" delivered at the Royal Institution at Xmas 1913 (1915)
Turner, Herbert Hall, 1861-1930 · London Society for Promoting Christian Knowledge · leaf 74
intohalves and you getthe squint mark for 20. One half must haveall the marks between 10 and 20, the other musthave everything above 20 ! When we use our eyeswe have no card, but we attend to the feelings of ournerves and muscles, which can scarcely distinguishbetween these various squints at long… … CARD OF SOU/NT Fig. 10. 54 A VOYAGE IN SPACE comes across this same difficulty, since the squint is always small, owing to the object being veryfar away. Now there is one method of getting overthis difficulty which I have not yet mentioned : ifwe could put our eyes at the end of long horns, notlike…
Astronomy -- Juvenile literature
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
